Patents by Inventor Warwick Brook Tozer

Warwick Brook Tozer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10654326
    Abstract: Tow coupling (100) having a tow coupling part (128) for fitment to a tow ball (104) of the vehicle, a load coupling (190) for coupling to a load to be towed, and a tow element (180) pivotally connecting to the tow coupling part (128) and to the load coupling part (190). Pivoting of the tow element (180) with respect to the tow coupling part (128) varies the vertical position of the load coupling part (190). Positioning structure (220), between the tow coupling part (128) and the tow element (180) permits setting that position. The positioning structure (220) is resiliently biased by a spring (260) so as to resiliently bias the tow element (180) such that the load coupling (190) assumes a selectable set position, from which the load coupling (190) is however upwardly displaceable under pivoting of the tow element (180) against that resilient bias.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 19, 2020
    Assignee: AERO-TECH PTY LTD.
    Inventors: Warwick Brook Tozer, Cameron Ronald Tozer
  • Publication number: 20180297428
    Abstract: Tow coupling (100) having a tow coupling part (128) for fitment to a tow ball (104) of the vehicle, a load coupling (190) for coupling to a load to be towed, and a tow element (180) pivotally connecting to the tow coupling part (128) and to the load coupling part (190). Pivoting of the tow element (180) with respect to the tow coupling part (128) varies the vertical position of the load coupling part (190). Positioning structure (220), between the tow coupling part (128) and the tow element (180) permits setting that position. The positioning structure (220) is resiliently biased by a spring (260) so as to resiliently bias the tow element (180) such that the load coupling (190) assumes a selectable set position, from which the load coupling (190) is however upwardly displaceable under pivoting of the tow element (180) against that resilient bias.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 18, 2018
    Applicant: AERO-TECH PTY LTD.
    Inventors: Warwick Brook TOZER, Cameron Ronald TOZER
  • Patent number: 8839878
    Abstract: A device (10) for collecting debris from a ground surface (18). A flexible generally planar member (17) has openings (16) therethrough. When the device is laid on and forwardly moved over the ground surface (18) debris on the ground surface passes upwardly through the openings, over inclined pick-up portions (42) of the device and thence onto collection surfaces (25) of the device. The device has transversely extending openings (88) spaced in the lengthwise direction on inclined surfaces (68) of the pick-up portions (42) whereby under forward movement of the device (10) in use, debris is accumulated in the recesses (88). Debris accumulated in the recesses (88) tends to be retained therein during deceleration of the device (10).
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: September 23, 2014
    Assignee: Aero-Tech Pty Ltd.
    Inventor: Warwick Brook Tozer
  • Publication number: 20120047666
    Abstract: A device (10) for collecting debris from a ground surface (18). A flexible generally planar member (17) has openings (16) therethrough. When the device is laid on and forwardly moved over the ground surface (18) debris on the ground surface passes upwardly through the openings, over inclined pick-up portions (42) of the device and thence onto collection surfaces (25) of the device. The device has transversely extending openings (88) spaced in the lengthwise direction on inclined surfaces (68) of the pick-up portions (42) whereby under forward movement of the device (10) in use, debris is accumulated in the recesses (88). Debris accumulated in the recesses (88) tends to be retained therein during deceleration of the device (10).
    Type: Application
    Filed: February 9, 2009
    Publication date: March 1, 2012
    Applicant: AERO-TECH PTY LTD.
    Inventor: Warwick Brook Tozer
  • Publication number: 20110113575
    Abstract: A device (10) for collecting debris from a ground surface (18). A flexible generally planar member (17) has openings (16) therethrough. When the device is laid on and forwardly moved over the ground surface (18) debris on the ground surface passes upwardly through the openings onto collection surfaces (25) of the device. The device has transversely extending barriers (67) positioned whereby, debris passing upwardly through the openings (16) passes upwardly over the barriers (67) and then downwardly to the following collection surface (25). The barriers (67) at least partially obstruct movement of collected debris on the collection surfaces (25) back into the openings (16) under deceleration of the device as it is forwardly moved over the ground surface.
    Type: Application
    Filed: August 25, 2008
    Publication date: May 19, 2011
    Applicant: AERO-TECH PTY LTD.
    Inventor: Warwick Brook Tozer
  • Patent number: 6634667
    Abstract: A connection (1) for a pintle hook tow point having a rearwardly and upwardly extending horn, and which extends rearwardly from a forward mounting plate of the pintle hook tow point. A bracket (2) of the connection (1) carries a transverse roller (3) mounted for rotation about an at eccentric axis. The roller (3) is connected to a handle (11) by which it can be rotated to vary the distance between the side of the roller and forward end feet (12, 13) of the bracket (2). For use, the bracket (2) is placed over the horn, and the feet (12, 13) are urged against the mounting plate of the pintle of the hook tow point or another fixed surface. By this, the connection (1) is locked on the pintle hook tow point.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: October 21, 2003
    Assignee: Aero-Tech Pty. Ltd.
    Inventor: Warwick Brook Tozer
  • Patent number: 6454018
    Abstract: A mat for sweeping a surface, formed of grid-like, semi-flexible material. The mat is pulled over the surface to effect the sweeping. The material has open slots (112a,112b) therethrough. The slots have a leading edge and a trailing edge disposed transversely relative to the direction of travel of the mat. Ground debris can pass upwardly through each slot, over the respective railing edge to collect on an upper surface of the mat. Over the upper surface, the grid-like material defines an array of first apertures (136). At least a substantial proportion of the first aperatures (136) have within them second apertures (146) of smaller size than the first apertures.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: September 24, 2002
    Assignee: Aero-Tech PTY LTD
    Inventor: Warwick Brook Tozer
  • Publication number: 20010038921
    Abstract: A mat for sweeping a surface, formed of grid-like, semi-flexible material. The mat is pulled over the surface to effect the sweeping. The material has open slots (112a, 112b) therethrough. The slots have a leading edge and a trailing edge disposed transversely relative to the direction of travel of the mat. Ground debris can pass upwardly through each slot, over the respective trailing edge to collect on an upper surface of the mat. Over the upper surface, the grid-like material defines an array of first apertures (136). At least a substantial proportion of the first apertures (136) have within them second apertures (146) of smaller size than the first apertures.
    Type: Application
    Filed: December 4, 2000
    Publication date: November 8, 2001
    Inventor: Warwick Brook Tozer
  • Patent number: 6257345
    Abstract: A device (300) for collecting debris from a surface. The device has a generally planar matting material (15) the undersurface of which is formed with depending bristles (14). The device (300) has an opening (16) therethrough which when the device is moved over a ground surface (18) with the bristles (14) in contact therewith debris on the ground surface (18) pass through the opening (16). The forward and aft edges (361, 362) of the matting (15) are provided with transverse stiffening members (363). A plurality of wheels (365) at least partially support the stiffening members (361, 362).
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: July 10, 2001
    Assignee: Aero-Tech Pty Ltd
    Inventor: Warwick Brook Tozer